Et puis pendant que j'y suis il y a aussi ça :
And then while I am there, there is also that:
en effet ce menu ne s'étire pas quand on élargie la fenêtre.
indeed this menu does not stretch when the window is widened

I allows me to return on the problem at the origin of this subject. Indeed this last one arises when the window is not for its size of origin and that we restart either not the application or whether we change language.